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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: NOS vs Delta sigma posted by sbrians on April 21, 2014 at 16:09:03:
So called, NOS, for A/D conversion (meaning, I presume, without an anti-alias filter) is a huge no-no on relatively low sample rate recordings - such as CD standard. Any ultrasonic frequency input above half the sample rate will be aliased down to unpleasantly appear within the audio band. A recording having a native sample rate far enough above the input signal frequencies (such as with DSD) is essentially self band-limited, and so can do without the usual sharp anti-alias filter.This has not so much to do with whether the ADC is sigma-delta based or not (although, they all are today).
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Ken Newton
Edits: 04/22/14 04/22/14
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- RE: NOS vs Delta sigma - knewton 10:37:40 04/22/14 (0)
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